From
Humax Digital RCU setup (RM0F04)
I've copied here the relevant parts for my own reference
Later handsets with 4-digit codes
Quote:
“. Using the Universal Remote Control
1. Selectthe mode(PVR,TV,DVD,AUDIO) youwantto setbypressing the correspondingbutton on the
remote control.Thebuttonwillblink once.
2. Keeppressing thebutton for 3 seconds untilthebutton lights on.
3. Enterthe 4-digit code. Every time a numberis entered,thebuttonwillblink.When the fourth digitis
entered,thebuttonwillblink twice.
4. If a valid 4-digit code is entered,theproductwillpower off.
5. PresstheOKbutton and the modebuttonwillblink three times.The setupis complete.
6. Iftheproduct does notpower off,repeatthe instruction from 3 to 5.
Note:
• When no code is entered for one minute the universalsetting modewillswitch to normal mode.
• Try severalsetting codes and selectthe code that hasthe mostfunctions.”
and (DVD codes)
Quote:
“Sony 0533, 0864, 1033, 1070, 1516, 1536,
1633, 1824,1903, 1981, 2020, 2043,
2132, 2138
Panasonic 0490, 1579, 1641, 1834, 1905, 1908”
Earlier handsets with three-digit codes
Quote:
“. Using the universal remote control
1. Pressthe MODEbutton.The remote control LEDwillblink once.
2. Pressthe MODEbutton for 3 seconds untiltheTV LEDturns on.The LEDwillstay on even afterthebutton is
released.
3. Selecttheproduct youwantto setpressing the MODEbutton. Every time youpressthebutton,the remote control
LEDwillblink in the following order;TV,AUDIO,DVD,TV,…
4. Enterthe 3-digit code. Every time you enter a number,the LEDwillblink.When the third numberis entered,the
LEDwillblink twice.Thepower key code ofthe selected modelwill appear.
5. Afterthepower key code appears,theproductwillpower off.
6. PressOKand the LEDwillblink three times.The setupis complete.
7. Iftheproduct does notpower off,repeatthe instructionsfrom 4 to 6.”
Quote:
“SONY 033, 118, 126, 145, 191
PANASONIC 021, 138, 139, 144, 150”
Anyway it's been maybe four months since I set up the Humax, and I didn't document it then but one code that works the Sony Bluray is that for the Panasonic DVD recorders

so that may be what I found worked before. (Un)suprisingly none of the Sony DVD codes worked

Sorry for the misleading info before.